Lā'vȧ or Lä'vȧ, n.

(Synop., § 130), n. [It. lava, in Naples, a torrent of rain overflowing the streets, from It. & Lat. lavare, to wash; Sp. lava, Fr. lave.] The melted rock ejected by a volcano from its top or fissured sides. It flows out in streams sometimes miles in length. Dana.